When you are in the presence of Mussaddeque Ahmed and he makes your cheeks ache by causing you to laugh excessively. His Number 1 fan, Mamoon Ahmed, finds himself perpetually Mussed and as such cannot close his eyes to sleep.

Mussaddeque: *His jokes cannot be accurately replicated in text*
Mamoon: *The loving laugh which cannot be accurately conveyed in text*
Mamoon: WHAT HAVE YOU DONE MY CHEEKS ARE ACHING!
Jaker: You got mussed son.
Michelle: Muss you are so awesome I'm going to bake you a technical challenge.

Example 2:
Jaker: Mamoon are you awake?
*Mamoon is asleep but his eyes are open as he has been Mussed heavily during the day*
Jaker: OOOOOO he Got Mussed!